Chipper shredder

ABSTRACT

Exemplary embodiments of a chipper shredder are provided. In some exemplary embodiments, the chipper shredder can include a rotor disc having an obverse side and a reverse side, one or more chipper blades provided on the obverse side, one or more impeller blades provided on the reverse side, the one or more impeller blades being perpendicular to the rotor disc, one or more hammer blades on the reverse side, the one or more hammer blades being substantially parallel to the rotor disc, and one or more L-blades on the reverse side that extend outwardly and upwardly from a center of the rotor disc.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application relates to and claims priority from U.S. patentapplication Ser. No. 15/457,806, filed on Mar. 13, 2017, which claimspriority to U.S. Provisional Patent Application Ser. No. 62/307,231filed Mar. 11, 2016, the entire disclosures of which are herebyincorporated by reference in their entirety.

FIELD OF THE DISCLOSURE

The present disclosure relates to exemplary embodiments of a chippershredder, and more particularly, to exemplary embodiments of a rotaryassembly for a chipper shredder.

BACKGROUND OF THE DISCLOSURE

Chipper shredders are garden and landscape accessories used to reduce avariety of items such as leaves, twigs, small branches, cardboard, etc.,to smaller pieces. Typically, a chipper/shredder is provided with ahopper to receive materials to be shredded, macerated or otherwisereduced and a hopper throat to guide the materials towards high speed,rotating, macerating elements.

Various disadvantages are found in these chipper shredders, includingrelying solely on the apertures behind the blades as the only means ofpassing material from one side of the blade to the other, materialgetting stuck to the surface of the obverse disc face and needing to beperiodically removed, cutting surfaces or blades that are inefficient,processed material being discharged in a haphazard and unguided manner,the unwanted use of a collection bag, and the difficulty of capturingejected material.

At least one of the objects of the exemplary embodiments of the presentdisclosure is to reduce or address the deficiencies and/or limitationsdescribed herein above, by providing a chipper shredder that does notsuffer from these deficiencies.

SUMMARY OF EXEMPLARY EMBODIMENTS OF THE DISCLOSURE

At least some of the above described problems can be addressed byexemplary embodiments of the methods and systems according to thepresent disclosure. Exemplary embodiments of a chipper shredder can beprovided for, in which a chipper shredder is provided, which comprises arotor disc having an obverse side and a reverse side, one or morechipper blades provided on the obverse side, one or more impeller bladesprovided on the reverse side, the one or more impeller blades beingperpendicular to the rotor disc, one or more hammer blades on thereverse side, the one or more hammer blades being substantially parallelto the rotor disc, and one or more L-blades on the reverse side thatextend outwardly and upwardly from a center of the rotor disc.

In some exemplary embodiments, the one or more hammer blades have atleast one chiseled edge. In some exemplary embodiments, at least one ofthe one or more L-blades have two chiseled edges. The one or more hammerblades can be provided above the one or more impeller blades on thereverse side of the rotor disc. The one or more L-blades can be providedabove the one or more hammer blades on the reverse side of the rotordisc.

In some exemplary embodiments, the one or more impeller blades canextend from approximately a center portion of the rotor disc toapproximately a circumferential edge of the rotor disc. The one or moreimpeller blades can have a height that is greater at the center portionof the rotor disc than a height at the circumferential edge of the rotordisc. The height of the one or more impeller blades can graduallydecreases from the center portion of the rotor disc to thecircumferential edge of the rotor disc. The one or more hammer bladescan be rotatably fixed on the reverse side of the rotor disc. TheL-blades can be fixed on the reverse side of the rotor disc.

In some exemplary embodiments, a chipper shredder is provided,comprising a rotor disc having an obverse side and a reverse side, agroove provided approximate a circumferential edge of the obverse sideof the rotor disc, the groove having a length between a first end asecond end, a hole provided approximate the circumferential edge of theobverse side of the rotor disc, wherein the second end of the grooveterminates in the hole, wherein a depth of the groove increases from thefirst end to the second end.

In some exemplary embodiments, the chipper shredder can further compriseone or more chipper blades provided on the obverse side of the rotordisc, the one or more chipper blades being configured to cut material asit first enters the chipper shredder. The chipper shredder can furthercomprise at least one aperture provided approximate the one or morechipper blades, wherein the material passes from the obverse side of therotor disc through the at least one aperture to the reverse side of therotor disc. In some exemplary embodiments, the chipper shredder canfurther comprise one or more additional grooves provided between theaperture approximate the one or more chipper blades and the hole.

In some exemplary embodiments, the length of the groove can follow arotation of the rotor disc. The length of the groove can follow therotation of the rotor disc such that the first end of the groove isprovided at an earlier part of the rotation of the rotor disc and thesecond end of the groove is provided at a later part of the rotation ofthe rotor disc. In some exemplary embodiments, four grooves can beprovided approximate the circumferential edge of the obverse side of therotor disc, each groove having a length between a first end a secondend, and four holes are provided approximate the circumferential edge ofthe obverse side of the rotor disc, wherein the second end of eachgroove terminates in the hole, wherein a depth of each groove increasesfrom the first end to the second end of the respective groove.

In some exemplary embodiments, a chipper shredder is provided,comprising a rotor assembly for chipping and shredding material providedinto the chipper shredder, a discharge port for discharging the materialfrom the rotor assembly, and a discharge port cover provided on thedischarge port, the discharge port cover having an upper surfaceconfigured to receive the material ejected from the discharge port andguide the material in a downward direction away from the upper surfaceof the discharge port cover. The upper surface can have a curvedrectangular shape and two side surfaces each connected to the uppersurface along an upper portion of each side surface. The discharge portcover can be rotatably mounted to the discharge port and is configuredto cover the discharge port.

In some exemplary embodiments, the chipper shredder can further comprisea retention mechanism provided on the discharge port and the dischargeport cover for retaining a discharge bag for the ejected material. Theretention mechanism can comprise a hook and a cleft provided along aportion of the discharge port, and a rabbet provided along a portion ofthe discharge port cover. The hook and cleft can be provided along abottom portion of the discharge port, and the rabbet can be provided onan upper portion of the discharge port cover.

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other objects of the present disclosure will beapparent upon consideration of the following detailed description, takenin conjunction with the accompanying drawings and claims, in which likereference characters refer to like parts throughout, and in which:

FIG. 1 is a front view of a chipper shredder according to an exemplaryembodiment of the present disclosure;

FIG. 2 is a first side view of a chipper shredder according to anexemplary embodiment of the present disclosure;

FIG. 3 is a rear view of a chipper shredder according to an exemplaryembodiment of the present disclosure;

FIG. 4 is a second side view of a chipper shredder according to anexemplary embodiment of the present disclosure;

FIG. 5 is a view of an obverse side of a rotor disc of a chippershredder according to an exemplary embodiment of the present disclosure;

FIG. 6 is a view of a reverse side of a rotor disc of a chipper shredderaccording to an exemplary embodiment of the present disclosure;

FIG. 7 is a view of a hammer blade of a rotor assembly of a chippershredder according to an exemplary embodiment of the present disclosure;

FIG. 8 is a view of a reverse side of the rotor assembly including anL-blade and hammer blade of a chipper shredder according to an exemplaryembodiment of the present disclosure;

FIG. 9 is a view of a reverse side of the rotor assembly including anL-blade and an impeller blade of a chipper shredder according to anexemplary embodiment of the present disclosure;

FIG. 10 is a view of a discharge port and a discharge port cover of achipper shredder according to an exemplary embodiment of the presentdisclosure;

FIG. 11 is a view of a discharge port and a discharge port cover of achipper shredder according to an exemplary embodiment of the presentdisclosure;

FIG. 12 is a view of a discharge bag hook and a lower notch of a chippershredder according to an exemplary embodiment of the present disclosure;

FIG. 13 is a view of a discharge port cover including a rabbet of achipper shredder according to an exemplary embodiment of the presentdisclosure thereof; and

FIG. 14 is a view of a chipper shredder including a discharge port bagoperationally affixed to the chipper shredder utilizing a discharge portbag retention assembly according to an exemplary embodiment of thepresent disclosure.

Throughout the figures, the same reference numerals and characters,unless otherwise stated, are used to denote like features, elements,components or portions of the illustrated embodiments. Moreover, whilethe subject disclosure will now be described in detail with reference tothe figures, it is done so in connection with the illustrativeembodiments. It is intended that changes and modifications can be madeto the described embodiments without departing from the true scope andspirit of the subject disclosure.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS OF DISCLOSURE

Exemplary embodiments of the apparatuses and methods of the presentdisclosure will now be described with reference to the figures. Thefollowing description of the various embodiments is merely exemplary innature and is in no way intended to limit the scope of the disclosure,its application, or uses.

Referring to FIGS. 1-4, a chipper shredder 10 can be provided having amain housing 20, a hopper 13 above the main housing 20, a top handle 12connected to the hopper 13, one or more wheels 18 provided on an axle 15below the main housing, and a support leg 14 provided below the mainhousing 20 opposite the wheels 18. The wheels 18 can have wheel locks tolock the wheels 18. The hopper 13 can have a hopper flap (not shown).The chipper shredder 10 can also have a chipper chute 19 that can have achipper chute flap.

The main housing 20 can further include a rotor housing 210, which canbe provided at a rear of the chipper shredder 10, and a discharge portcover 120. An access panel 17 can be provided on the rotor housing 210.The rotor housing 210 can house a rotor assembly 200 and the dischargeport cover 120 can be a part of a discharge assembly 100, discussed infurther detail below.

Referring to FIGS. 5-6, a rotor assembly 200 in the rotor housing 210can include a rotor disc 220. The rotor disc 220 can include an obverseside as shown in FIG. 5, and a reverse side as shown in FIG. 6. As shownin FIG. 5, the obverse side of the rotor disc 220 can have two chipperblades 222, but can include less or more chipper blades and is notrestricted to any number of chipper blades. The chipper blades 222 canbe any type of blade and made of any material, and can be of arectangular configuration, but are not limited to any particular shape,and can be triangular, circular, trapezoidal or various other shapesaccording to the exemplary embodiments of the present disclosure. Thechipper blades 222 can have a cutting edge provided on a portion of oron the entire length of any of the long edges 222 a and short edges 222b around the periphery of the chipper blades 222. In some exemplaryembodiments, the chipper blades 222 can have a cutting edge on each ofthe long edges 222 a and short edges 22 b to provide a cutting surfacethroughout the entire periphery of the chipper blades 222.

Material can first enter the obverse side of the rotor disc 220 as itenters the chipper shredder 10 through, e.g., the chipper chute 19. Insome exemplary embodiments, beneath each of the chipper blades 222 is anaperture 224 through which initially chipped material passes through toreach the reverse side of the rotor disc 220, where it can be furtherchipped and shredded. In some exemplary embodiments, apertures 224 canbe provided approximate the longer edges 222 a of the chipper blades222.

In some exemplary embodiments, on the obverse side of the rotor disc220, there can be a combination of grooves 226 and holes 228. Eachgroove 226 can include one or more grooves, and can start at a locationindependent of a hole 228 and near a circumferential edge of the rotordisc 220, traverse for a length following a rotation R of the rotor disc220, and terminate at a hole 228. In some exemplary embodiments, thedepth of a groove 226 can increase as it approaches the hole 228. Forexample, the groove 226 and hole 228 configuration can be designed tofollow the direction of rotation R of the rotor disc 220, such that ashallow end 226 a of the groove 226 can be at an earlier point ofrotation R and that a deeper end 226 b of the groove 226 and hole 228can be at a later point in the rotation R. Such a groove 266 and hole228 structure can prevent jamming in the chipper shredder 10.

In some exemplary embodiments, the rotor assembly 200 can have but isnot limited to four groove and hole combinations located equidistant onthe rotor disc 220 and reside near a circumferential edge of the rotordisc 220. The groove and hole structure is not limited to any particularnumber of grooves 226 or holes 228, and any number of groove and holestructures are contemplated in the present disclosure. The holes 228 canbe in any number and in any shape, radius, multiple radii, or graduatingradii on the rotor disc 220. Each groove 226 can vary in depth, width orlength along the circumferential edge of the rotor disc 220. The grooveand hole structure can provide for material that is cut/shredded/brokenoff, and still residing on the obverse side of the rotor disc 220, to bedirectionally guided to the reverse side of the rotor disc 220 forappropriate chipping and shredding.

In some exemplary embodiments, there can be additional grooves 227provided on a circumferential edge of the rotor disc 220, which can beprovided between the chipper blade 22 and a hole 228. Each additionalgroove 227 can comprise one or more grooves. Each additional groove 227can vary in depth, width or length along the circumferential edge of therotor disc 220. In some exemplary embodiments, the ends 227 a, 227 b ofthe additional grooves 227 can be independent of the aperture 224 andthe holes 228 (i.e., not touching). In some exemplary embodiments, oneend 227 b of the additional grooves 227 can terminate in an aperture 224and one end 227 a can terminate in a hole 228. In addition to guidingmaterial to the reverse side of the rotor disc 220, the grooves 226 andthe additional grooves 227 can provide an air channel to lift wet orgreen material from the surface of the rotor disc 220, thereby allowingmaterial to flow to the reverse side of the rotor disc 220.

As shown in FIGS. 6-9, L-blades 240, hammer blades 230, and impellerblades 250 can reside on or be adjacent to the reverse side of the rotordisc 220. The L-blades 240, hammer blades 230, and impeller blades 250can be any number or types of blades, any can be constructed of anymaterial and of any configuration, and are not limited to any particularnumber, material or shape. In some exemplary embodiments, the L-blades240, hammer blades 230, and impeller blades 250 can be one or more of asquare, rectangular, triangular, circular, trapezoidal, polygonal orvarious other shapes or configurations according to the exemplaryembodiments of the present disclosure. The L-blades 240, hammer blades230, and impeller blades 250 can have a cutting surface provided on aportion of or on an entire length of a cutting edge on the respectiveblade, as described more fully below.

In some exemplary embodiments, material can pass from the obverse sideof the rotor disc 220 to the reverse side of the rotor disc 220 throughthe holes 228 and apertures 224. The impeller blades 250 can extendoutwardly from approximately a center portion of a surface of thereverse side of the rotor disc 220 to approximately a circumferentialedge of the rotor disc 220, along a surface of the rotor disc 220. Eachimpeller blade 250 can have a top surface 250 a, a bottom surface 250 bprovided on the rotor disc 220, and a side surface 250 c approximate thecircumferential edge of the rotor disc 220. In some exemplaryembodiments, either or both of the top surface 250 a and the sidesurface 250 c can have a cutting surface provided on a portion or entirelength of the top surface 250 a and the side surface 250 c,respectively.

As shown in FIG. 6, the impeller blades 250 can be perpendicular to thesurface of the rotor disc 220. In some exemplary embodiments, fourimpeller blades can be provided on the surface of the rotor disc 220equidistant from each other along a rotational edge of the rotor disc220, and the exemplary embodiments of the present disclosure are notlimited to any particular number of impeller blades. The impeller blades250 can be rectangular in cross-section, but are not limited to anyparticular shape according to the exemplary embodiments of the presentdisclosure.

The hammer blades 230 of the chipper shredder 10 can be rotatablyaffixed to the rotor assembly 200, and provided above the impellerblades 250. As shown in FIG. 7, the hammer blades 230 can have a sidesurface 232, side surface 234 and a side surface 236. In some exemplaryembodiments, a portion or the entire length of the side surface 232 canbe chiseled to provide a chiseled edge 232 along a leading edge, asdetermined by the rotation R of the rotor disc 220, such that it canhave the ability to chip and shred material rather than only maceratingit. This feature can provide for wood material to be already cut beforethe wood material reaches the L-blades 240. In some exemplaryembodiments, the hammer blades 230 can have edges on both side surfaces232, 234 be chiseled edges, or on all three side surfaces 232, 234 and236 be chiseled edges. A portion or an entire length of the sidessurfaces 232, 234 and 236 can be chiseled. The hammer blades 230 can beof a rectangular configuration but are not limited to any particularshape, and can be square, triangular, circular, trapezoidal, polygonalor various other shapes according to the exemplary embodiments of thepresent disclosure. The hammer blades 230 can be substantially parallelto the surface of the rotor disc 220. In some exemplary embodiments, twohammer blades 230 can be provided on the chipper shredder atapproximately opposite locations along a circumference of the rotor disc220, and the exemplary embodiments of the present disclosure are notlimited to any particular number of hammer blades 230.

Referring now to FIGS. 8-9, the L-blades 240 of the chipper shredder 10can be operationally affixed and at rest in the rotor assembly 200. Thehammer blades 230 can have a chiseled edge along one or more sidesurfaces that, as discussed above, cuts, chips and shreds, as well asmacerates, the material. The L-blades 240 of the chipper shredder 10 canface the back of the rotor housing 210 and cut the material evenfurther. The L-blades 240 can have a chiseled edge on a portion orentire length of a leading side surface 242a, or a chiseled edge on aportion or entire length of both the leading side surface 242 a andtrailing side surface 242b. The L-blades 240 can extend upward andoutwardly from the surface of the rotor disc 220. In some exemplaryembodiments, each of the L-blades 240 can face the same direction. TheL-blades 240 can have a trapezoidal cross-section, and are not limitedto any particular shape according to the exemplary embodiments of thepresent disclosure.

The chipper shredder 10 can have two L-blades 240, which can be providedat approximately opposite locations along a circumference of the rotordisc 220, and in some exemplary embodiments, can have four L-blades 240provided at equidistant locations along a circumference of the rotordisc 220, and are not limited to any particular number according to theexemplary embodiments of the present disclosure. The L-blades 240 cancut, chip and shred material resulting in a finer and more consistentproduct and a more efficient machine. Additionally, having the twoL-blades 240 face the same direction can result in a more efficient useof construction materials, a better housing design, and reduction ofpossibility of injury from, e.g., a burn.

In some exemplary embodiments, having both L-blades 240 face the back ofthe rotor housing 210 provides less wear and tear on the main housing20. The placement of the L-blades 240 facing the back of the rotorhousing 210 instead of the main housing 20 allow the L-blades 240 tohave smaller pieces of wood to cut (having been cut by the hammer blades230), have smaller pieces that are less likely to be caught between therotor housing 210 and the L-blades 240, and less likely to cause damageto the body of the chipper shredder 10.

In some exemplary embodiments, as shown in FIG. 9, one or more impellerblades 250 can be provided on a surface of the rotor disc 220. In someexemplary embodiments, multiple impeller blades 250 can be provided. Theimpeller blades 250 can efficiently and completely guide material fromthe center of the rotor disc 220 outwardly to the circumferential edgeof the rotor disc 220, and through the discharge port 110. The impellerblades 250 can be approximately or substantially perpendicular to thesurface of the rotor disc 220, and can have a greater height near thecenter of the rotor disc 220 and a shorter height near thecircumferential edge of the rotor disc 220. The height of the impellerblades 250 can gradually decrease from near the center of the rotor disc220 as it extends to near the circumferential edge of the rotor disc220. This can help the removal process in getting the material out ofthe chipper shredder 10. The impeller blades 250, L-blades 240 andhammer blades 230 can provide a hammer, chop and mulch function of thechipper shredder apparatus 10.

FIGS. 10-11 illustrate a discharge assembly 100 of the chipper shredder10. The rotor assembly 200 can eject the processed material through adischarge port 110. The discharge port 110 can eject material from themain housing 20 in a guided, straight line and in a generally downwarddirection. In some exemplary embodiments, the discharge port 110 canhave a discharge port cover 120. The discharge port cover 120 can haveseveral functions, including providing a cover to the discharge port 110when the chipper shredder 10 is not in use and to guide and impact thedirection of the material ejected from the discharge port 110. Thedischarge port cover 120 can be rotatably mounted to the main housing 20through pivot element 125.

In some exemplary embodiments, the discharge port cover 120 can have butis not limited to the shape of a segment of a circular disc. The uppersurface 120 a that impacts vertical movement of the discharge materialcan be rectangular in shape and curved along its length, and as theupper surface 120 a also encompasses the top portion that is removablyand rotatably affixed to the rotor housing 210, the entire piece can beone curved rectangular element. The upper surface 120 a is not limitedto any particular shape or configuration, and can be of various shapesand configurations that can cover the discharge port cover and guide theejected material downward according to the exemplary embodiments of thepresent disclosure.

The two side surfaces 120 b can each be affixed to the length of theupper surface 120 a, and can each be shorter in length than the uppersurface 120 a. The two side surfaces 120 b can each be curved alongtheir top portions so as to form a complete join with the upper surface120 a, and can be a single unitary element in some exemplaryembodiments. The two side surfaces 120 b can have a first portion at oneend of the upper surface 120 a, and extend to a second portion at asecond opposite end of the upper surface 120 a, before the point wherethe upper surface 120 a is rotatably affixed to the main housing 20 atpivot element 125. The width of each of the side surfaces 120 b can benoticeably shorter, which allows the discharge port cover 120 of thepresent disclosure to fully close against the discharge port 110 withoutbeing prevented by any other fixture on the chipper shredder 10.

Referring to FIGS. 12-14, in some exemplary embodiments, the dischargeassembly 100 can additionally include a retention mechanism for adischarge bag 130. For example, at the base of the discharge port 110,as shown in FIG. 12, there can be provided a hook or flange 140. Oneither side of the flange 140 a cleft 142 can be provided, that incooperation with the flange 140 can provide support and retention forthe discharge bag 130 at the lower part of the discharge port 110. Asshown in FIG. 13, at the top of the discharge port cover 120, a rabbet144 can be provided to receive another portion of the mouth of thedischarge bag 130. The mouth of the discharge bag 130 when tightened andclosed can thereby be retained by the flange 140 and cleft 142combination at one end of the discharge port 110, and by the rabbet 144at the discharge port cover 120 at the other end of the discharge port110. The discharge bag 130 can thereby be securely, and removably,affixed to the chipper shredder 10 without slippage, as shown in FIG.14.

In some exemplary embodiments, the chipper shredder 10 can be operatedwithout a discharge bag, as the curved upper surface 120 a can guide andpinpoint the location of the discharged material from the discharge port110. In some exemplary embodiments, the curvature of the discharge portcover 120 can have the further advantage of prolonging the life of thedischarge bag 130. When the chipper shredder 10 is used in conjunctionwith the discharge bag 130, the curvature of the discharge port cover120 can direct the ejected material downwards to the bottom of thedischarge bag 130. Because the ejected material is directed downwardlyto the bottom of the discharge bag 130, material hits the discharge bag130 only once and thereafter the ejected material is hitting, withforce, the previously ejected material.

Various advantages of the chipper shredder 10 are provided by theexemplary embodiments of the present disclosure. For example, thechipper shredder 10 can provide a unique rotor disc assembly and parts,having unique hammer blades, L-blades, impeller blades, discharge portand discharge port cover, discharge bag attachment mechanism and tires.The chipper shredder 10 can provide a hammer blade for a chippershredder that has a unique cutting edge, and a hammer blade that cutsmaterial before that material is presented to other flanges in thedevice. The rotor disc for the chipper shredder 10 does not rely solelyon an aperture behind the blade as the sole means of passing materialfrom one side of the blade to the other. The rotor disc of the chippershredder 10 can have a means for remnants of semi-processed material tonot remain on the obverse side of the rotor disc and impede the chippershredder process. The rotor disc of the chipper shredder 10 can ejectmaterial quickly and efficiently.

Additionally, the L-blades of the chipper shredder 10 can cut along itsforward facing side. The L-blade, alone or in combination with otherL-blades, can provide for efficient use of the motor and does not causeprocessed material to be held within the device rather than beingdischarged and ejected. The L-blade when used in combination with atleast one other L-blade, can create an efficient use of space andmaterial for the chipper shredder. The L-blades, and the rotor assembly,can provide for an efficient and slim main housing. The chipper shredder10 can provide a mechanism to control and guide the discharge of theprocessed material. The chipper shredder 10 can provide a mechanism toaffix a debris collection bag to the chipper shredder, and to securelyand reliably affix, for the duration of the process, a debris collectionbag to the chipper shredder 10. The chipper shredder 10 can provide fora unique tire and tire tread.

Various other considerations can also be addressed in the exemplaryapplications described according to the exemplary embodiments of thepresent disclosure. For example, various materials may be used toconstruct the elements described in the figures. Various sizes anddimensions of the elements can be provided, as well as shapes for thechipper shredder and its various components. Different numbers,positions and configurations of the impeller blades, L-blades and hammerblades can be provided according to the exemplary embodiments of thepresent disclosure.

The foregoing merely illustrates the principles of the disclosure.Various modifications and alterations to the described embodiments willbe apparent to those skilled in the art in view of the teachings herein.It will thus be appreciated that those skilled in the art will be ableto devise numerous apparatuses, arrangements, manufacture and methodswhich, although not explicitly shown or described herein, embody theprinciples of the disclosure and are thus within the spirit and scope ofthe disclosure. The disclosures of all documents and publications citedherein are hereby incorporated herein by reference in their entireties.

What is claimed is:
 1. A chipper shredder, comprising: a rotor dischaving an obverse side and a reverse side; a groove provided approximatea circumferential edge of the obverse side of the rotor disc, the groovehaving a length between a first end a second end; a hole providedapproximate the circumferential edge of the obverse side of the rotordisc, wherein the second end of the groove terminates in the hole;wherein a depth of the groove increases from the first end to the secondend.
 2. The chipper shredder according to claim 1, further comprising:one or more chipper blades provided on the obverse side of the rotordisc, the one or more chipper blades being configured to cut material asit first enters the chipper shredder.
 3. The chipper shredder accordingto claim 2, further comprising: at least one aperture providedapproximate the one or more chipper blades; wherein the material passesfrom the obverse side of the rotor disc through the at least oneaperture to the reverse side of the rotor disc.
 4. The chipper shredderaccording to claim 1, further comprising: one or more additional groovesprovided between the aperture approximate the one or more chipper bladesand the hole.
 5. The chipper shredder according to claim 1, wherein thelength of the groove follows a rotation of the rotor disc.
 6. Thechipper shredder according to claim 5, wherein the length of the groovefollows the rotation of the rotor disc such that the first end of thegroove is provided at an earlier part of the rotation of the rotor discand the second end of the groove is provided at a later part of therotation of the rotor disc.
 7. The chipper shredder according to claim1, wherein four grooves are provided approximate the circumferentialedge of the obverse side of the rotor disc, each groove having a lengthbetween a first end a second end, and four holes are providedapproximate the circumferential edge of the obverse side of the rotordisc, wherein the second end of each groove terminates in the hole,wherein a depth of each groove increases from the first end to thesecond end of the respective groove.